Service difficulty report · Connector · Boeing 7474KZF

Difficulty date
May 5, 2019
Submitted
May 8, 2019
Operation
Air carrier
Aircraft
N407KZ
Make and model
Boeing 7474KZF
Aircraft serial
36134
Aircraft time
41,038 hours, 7,784 cycles
Part
Connector
Condition
Loose
Location
Bleed Air Sys
Stage of operation
TO
How discovered
O
Nature of condition
N
Precautionary procedure
C

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ADVISORY "BLEED 2" AFTER TAKE OFF THRUST WAS ADVANCED. THE TAKE OFF WAS REJECTED AT APPROXIMATELY 80 KNOTS.(<P>ITEM TRANSFERRED TO MDDR #111197 PER MEL 36-21-04. JUMPERED OVER-PRESSURE SWITCH ENGINE NR 2. CAT C. DUE 15MAY19.</P><P>LP 1058712 - M5/M6: REVIEWED FAULT HISTORY. CMC REPORTED "BLEED 2 HIGH PRESS S/O VLV FAIL" MSG #36002. PERFORMED WIRING CHECKS IAW FIM 36-11 TASK 802 AND WDM 36-11-42. FOUND OPEN CCT BETWEEN HPSOV (V347) (NO 1.2.3 LINE) AND ASCTU (DM 7957BA) (E15 . F15 PIN) AND GND LINE. THEN FOUND CONNECTION (D4210P) LOOSE AND IN THE INCORRECT POSITION. RE-TIGHTENED IT AND WIRING CHECK OK BETWEEN ASCTU AND HPSOV IAW WDM 36-11-42. CONFIRMED HPSOV AND PRV OPS CHECK WITH ENGINE RUN. ALL MSG CLEARED, MDDR # 111197 CLOSED AND MCC NOTIFIED. </P>)

More about the Boeing 747-4KZF